Find the length of chord AB. Assume the graph is scaled by ones. Give exact and
approximate answers. Round to the nearest hundredth.
O sqrt(34); 5.83 units
O sqrt(24): 4.90 units
O sqrt(26): 5.10 units
O sqrt(10): 3.16 units

Find the length of chord AB Assume the graph is scaled by ones Give exact and approximate answers Round to the nearest hundredth O sqrt34 583 units O sqrt24 490 class=

Respuesta :

Answer: Choice C

exact length = sqrt(26) units

approximate length = 5.10 units  

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Work Shown:

We can use the distance formula.

A = (x1,y1) = (2,2)

B = (x2,y2) = (1,-3)

[tex]d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(2-1)^2 + (2-(-3))^2}\\\\d = \sqrt{(2-1)^2 + (2+3)^2}\\\\d = \sqrt{(1)^2 + (5)^2}\\\\d = \sqrt{1 + 25}\\\\d = \sqrt{26}\\\\d \approx 5.0990195\\\\d \approx 5.10\\\\[/tex]

The distance from A to B is exactly sqrt(26) units which approximates to 5.10 units. This distance represents the length of chord AB.